Gluing up treated lumber

[/pine]

You don't say where you're located...if you live near any coastal regions you might check with any boat builders, marine yards or even marinas...There is pressure treated wood that has been kiln dried after it has been treated available...both plywood and dimensional lumber...it generally costs 10%-20% above standard PT lumber...

 

[stuckmotor]

I bought some pressure treated lumber yesterday. The lady at the register said I had to use galvinized nails because the copper would eat up regular nails. It was news to me.

 

[ishiboo]

Pressure-treated wood glues/stains/etc. exactly the same as regular wood once it has dried. Any waterproof glue will work.

For large volumes and high-strength joints, a 2-part poly or epoxy resin might be the answer.

 

[CNC Dan]

I bought some pressure treated lumber yesterday. The lady at the register said I had to use galvinized nails because the copper would eat up regular nails. It was news to me.

That's the new pressure treated lumber. It is very corrosive to standard hardware. Saw a regular black drywall screw get eaten up in a few weeks. Look on the boxes of deck screws to see what they are good for.

 

[lilranch2001]

Indiana
I have decided to just use 6x6 treated posts side by side.
My glued up idea sounds like more work than it is worth
Thanks for your answers tho

 

[ray66v]

You don't say where you're located...if you live near any coastal regions you might check with any boat builders, marine yards or even marinas...There is pressure treated wood that has been kiln dried after it has been treated available...both plywood and dimensional lumber...it generally costs 10%-20% above standard PT lumber...

Yep, it's a grade of pressure treated called KDAT, Kiln dried after treatment.

We have one lumber yard, in central Ohio, that sells it.

I always buy some to put in stock, for future projects, when I am down there.

If I had my way, I would never use wet pressure treated wood.

 

[/pine]

Indiana
I have decided to just use 6x6 treated posts side by side.
My glued up idea sounds like more work than it is worth
Thanks for your answers tho

If you can get the lengths you need to span it sounds good...if you're worried about loads or sagging over time you could bolt them together with a steel flitch plate between them...

if you're unfamiliar with flitch plates here is some info:
Flitch beam - Wikipedia, the free encyclopedia

 

[/pine]

Yep, it's a grade of pressure treated called KDAT, Kiln dried after treatment.

We have one lumber yard, in central Ohio, that sells it.

I always buy some to put in stock, for future projects, when I am down there.

If I had my way, I would never use wet pressure treated wood.

Interesting...is the marine industry their primary purchasers?

 

[ray66v]

Interesting...is the marine industry their primary purchasers?

Nope. It's mostly used by the Amish, to make outdoor furniture for sale, and pole barns.

 

[elginfarm]

Why not use some glu-lams or para-lams? I'm not sure if they are available treated, but you could coat them with preservative.